Indicating-lock



I'. HEBERLHA HJDICATING LOCKl APPLICATION msn IIAY 21, ISIS.

M, a A TTORNEYS.

JOI-IN HEBERLING, 0F RQCHESTER, NEVI YORK.

INDICATING-LO CK.

ApplicatiOn filed May 21, 1919.

To all 'whom t may concern Be it known that I, JOHN Hnnrnnve, a citizen of the United States, and resident of Rochester, in the county of Monroe and State of New York, have invented certain new and useful Improvements in Indicating-Locks, of which the following is a specification.

The present invention relates to indicating locks and more particularly to the type in which a bolt has an indicator associated therewith for the purpose of indicating the position of the bolt, an object of this invention being to provide a connection between the bolt and the indicator which will permit the indicator to move to and from indicating position with the bolt when the latter is shifted to and from locking position, while at the Sametime the indicator may be moved independently of the bolt when the latter is in locking position so that it will be impossible for one to unloclr the door from the indicating side through the manipulation of the indicator. Another ob- 'ject of this invention is to provide a simple and inexpensive construction in which a locking bolt is provided with an indicator for indicating the position of the bolt.

To these and other ends, the invention consists of certain parts and combinations of parts, all of which will be hereinafter described, the novel features being pointed out in the appended claims.

In the drawings: y

Figure 1 is a fragmentary view of a door equipped with the present invention, the door being illustrated from the side on which the operating member for the bolt is arranged;

Fig. 2 is a view of the opposite side of the door showing the indicator, the latter being in the position indicating that the door is locked;

Fig. 3 is a horizontal section through the indicating lock;

Fig. 4 is a detail view of the indicator showing the position of the latter when'the bolt is in locking position;

Fig. 5 is a detail view of the indicator showing the position of the latter when the bolt is in unlocking position;

Specification of Letters Patent.

Patented Apr. 20, 1920.

serial No. ceases.

of the occupant. Locks which have an in- .dicator associated with the bolt thereof for the purpose of determining the position of the bolt were known prior to the invention. In such constructions, however, the indicator has usually been connected with the locking bolt in suoli manner that the locking bolt is controllable from the outside of the door and in this way entrance into the room may be effected through the indicator. In the present invention this disadvantage is overcome by providing a connection between the indicator and the bolt which will permit the indicator to follow he bolt toward and from locking position and yet, at the same time, the indicator may be shifted away from indicating position independently of the bolt so that the bolt cannot be controlled through such indicator.

In the embodiment of the invention herein illustrated l indicates the door or other member to be locked, and 2 indicates the loclring bolt. In this instance, this bolt opcrates within a tube 8 fitted in a bore formed in one edge of the door, the bolt being controlled in any suitable manner preferably from one side of the door through an operating shaft i which is ournaled in a face or escutcheou plate 5 and has on one end an operating portionv 6 while at the other end there is provided a pinion 7 extending through the tube 3 and meshing with a rack 8 formed on the bolt 2.

The indicator, in this instance, comprises a plate 9 having its outer face provided preferably with some written mattei' as the word In, This indicator preferably ex.- tends laterally from a rocking frame 10 formed from sheet metal in one piece with the indicator and ournaled upon a shaft l1. rIhe rocking frame also has an arm l2 extending laterally from the axis of the frame and coperating preferably with the beveled end 13 of the locking bolt 2. 1t is preferred to mount the shaft 11 of the rocking frame upon a housing or cover member 14, the latter being in this instance secured by screws 15 to the outer face of the door 1, and being of cup formation so as to provide a chamber in which the indicator may operate. The front wall of this housing preferably has an opening 16 which will expose the indicator 9 when the latter is in the position to show that the locking bolt is in locking position. The rocking frame is held to the post 11 preferably by a headed screw 17 and in order that the arm 12 of the rocking frame may cooperate with the beveled end 13 of the locking bolt, the door frame is provided with a bore 1S on its outer side intersecting the bore 19 in which the tube 3 is arranged, this bore being extended beyond the inner end of said tube.

Connection between the arm 12 and the beveled end 13 of the locking bolt 2 is maintained preferably by a spring 20 which in this instance is of helical formation and. surrounds the post 11, one end of the spring being secured tothe cover while the other end is secured to the indicator. This spring causes the indicator to move with the bolt when the latter is shifted to locking position while the movement of the bolt away from locking position presses on the arm 12 and places the spring under tension. This spring also serves the function of permitting the indicator to move away from its position indicating the locking position of the bolt without transmitting the movement of the indicator to the bolt. The advantage of this is that should one attempt to control the bolt from the outside of the door through the indicator, the attempt would be unsuc cessful, due to the fact that the indicator alone would move, the brealzable connection between the indicator and the locking bolt permitting this independent movement. Of course, when the indicator is released after such an attempt, the indicator will move to indicating position under the action of the spring. It is preferred to arrange within the indicator housing 14 a plate 21 which is secured by rivets 22 to the housing 14 to one side of the opening 16 and is offset rear wardly at 23 to provide a stop for the indicator. This plate not only serves to cover up the opening in the door frame but it also may be employed for holding some indicating matter, such for instance as the word Out upon its face opposed to the opening so that when the indicating member 9 is moved away from the opening 16, the word Out will be exposed.

From the foregoing it ywill be seen that there has been provided a bolt with an indicator which will indicate the position of the bolt from the outside of the door. This iir dicator is so connected to the bolt that while it follows the movements of the bolt to and from locking position, yet the bolt cannot be moved to unlocking position through the indicator. The construction herein provided is simple in operation and inexpensive to manufacture. The indicator is mounted upon a cover plate which is attached to the `outer face of the door and covers up the opening through which the indicator connects with the locking bolt.

That 1 claim as my invention and desire to secure by Letters Patent is:

1. An indicating lool; comprising a bolt, and an indicator having aconnection with the bolt to move with the bolt when the latter is moved either to locking or unlocking position, said connections permitting the indicator to move away from indicating position independently of the bolt.

2. An indicating lock comprising a bolt, an indicator for indicating the position of the bolt, and a spring acting on said indicator to maintain connection between the bolt and the indicator so that the bolt and the indicator may move together in both directions, said spring yielding to permit the indicator to move away from indicating po'- sition without shifting the bolt.

3. An indicating look comprising a sliding bolt, an operator for the bolt controllable only from one side of the door, an indicator arranged to indicate the position of the bolt on the opposite side of the door, and a rocking frame to which said indicator is secured having an arm operable by the bolt.

4. An indicating lock comprising a bolt,

operating means for the bolt controllable only from one side of the door, an indicator for the bolt on the opposite side of the door, and a connection between the indicator and the bolt constructed to prevent the bolt being operated by the indicator. 5. An indicating lock comprising a bolt, operating means for the bolt controllable only from one side of the door, an indicator for the bolt on the opposite side of the door, and a breakable connection between the bolt and the indicator permitting the indicator to follow the bolt on the movement of said bolt, and the indicator to be moved away from indicating position independently of the bolt.

6. An indicating lock comprising a sliding bolt, operating means for the bolt, a rocking frame having an arm bearing against said bolt, a spring holding said frame arm against said bolt and permitting the frame to move away from the bolt, and an indicator carried by said frame.

7. An indicating lock comprising a sliding bolt, operating means for the bolt, a cover member of cup formation having a shaft extending therefrom` and provided with an opening, a rocking frame mounted to turn on said shaft, an indicator carried by said frame adapted to be exposed through the opening of the cover member, an arm carried by said frame and cooperating With the sliding bolt, and a spring acting on said frame to hold the arm in coperation with the sliding bolt.

8. An indicating lock comprising a sliding bolt having a rack formed thereon between its ends, an operating shaft provided With a pinion cooperating With said rack, a rocking frame having an arm coperating with the inner end of said sliding bolt, an indicator carried by said rocking frame, and

a spring operating on said rocking frame to hold the arm in cooperation with the end of the sliding bolt.

9. An indicating lock comprising a bolt, means for operating the bolt, and an indicator having a brealable connection With the bolt permitting the bolt to effect the movement of the indicator to and from indicating position with the movement of the bolt to and from locking position, said breakable connection preventing the movement of the bolt away from locking' position through the indicator.

JOHN HEBERLING. 

